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REPORT DOCUMENTATION PAGE HERORPICGHEDETINGIGODM | 
1. REPORT NUMBER 2. GOVT ACCESSION NO.| 3. RECIPIENT'S CATALOG NUMBER 
77-0110 
4. TITLE (and Subtitle) ‘ 5. TYPE OF REPORT & PERIOD COVERED 
Experimental Unsteady and Time Average Loads of 
the CP Propeller on a Model of the DD963 Class 
Destroyer for Simulated Modes of Operation 
Final 
6. PERFORMING ORG. REPORT NUMBER 
77-0110 
8. CONTRACT OR GRANT NUMBER(a@) 
7. AUTHOR(s) 
Stuart D. Jessup 
Robert J. Boswell 
John J. Nelka 
9. PERFORMING ORGANIZATION NAME AND ADDRESS 
David W. Taylor Naval Ship Research and 
Development Center 
Bethesda, Maryland 20084 
11, CONTROLLING OFFICE NAME AND ADDRESS 
Naval Sea Systems Command (0331G) 
Energy Conversion & Explosive Devices Division TaaINUMBERIORIDAGES 
Washington, D.C. 20362 310 
14. MONITORING AGENCY NAME & ADDRESS(if different from Controlling Office) 15. SECURITY CLASS. (of thia report) 
Naval Ship Engineering Center (6148) 
Propeller, Shafting & Bearing Branch Unclassified 
Washington, D.C. 20362 1Sa. DECL ASSIFICATION/ DOWNGRADING 
SCHEDULE 
10. PROGRAM ELE 
AREA & WORK 
Task Area SO 
Task 19977 
Work Unit No. 
12. REPORT DATE 
December 1977 
ME 
UN 
37 
1544-296 
16. DISTRIBUTION STATEMENT (of this Report) 
Approved for public release: Distribution Unlimited 
17. DISTRIBUTION STATEMENT (of the abstract entered in Block 20, if different from Report) 
18. SUPPLEMENTARY NOTES 
19. KEY WORDS (Continue on reverse side if necessary and identify by block number) 
Marine Propeller Propeller Research 
Controllable-Pitch Propeller Unsteady Loads 
Loads DD963 Class Destroyer 
Propulsion 
Model Experiments 
20. ABSTRACT (Continue on reverse side if necessary and identify by block number) 
Experiments are described in which the mean and unsteady loads were 
measured on a single blade of a model of the controllable-pitch propeller on 
the DD-963 Class Destroyer. The experiments were conducted behind a model of 
the DD-963 hull under steady ahead operation, hull pitching motions, and 
simulated acceleration maneuvers. The experimental techniques are outlined 
j and the dynamometer and data analysis system described. 
The results show that all significant loads except radial force are pre- 
dominantly of hydrodynamic origin. The circumferential variation of all 
FORM 
DD ; jan 73 1473 = EDITION OF 1 Nov 65 Is OBSOLETE UNCLASSIFIED 
S/N 0102-014- 6601 
SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 
